[TechAssist] Re: ATX Power supply
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 26 Jan 2004 12:42:25 -0500
David, you are correct in that it is not usually economically worth to
repair a 250W power supply, however there are cetain circumstances where
it is, such as- you have an old computer someone is willing to pay you
$50.00 for but the power supply isn't working. Are ya gonna bother
ordering one at $25.00 plus shipping if all it needs is a couple of
$2.00 transistors?
Basically my point of the message was to try and help Barry, not to
suggest trying to repair 250W power supplies. Actually when I did those
repairs, power supplies were more like $60.00 at the time.
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
David Lessard wrote:
>
> Sometimes there not worth repairing, ATX 250W P.S. used are $20. New
> 250W ATX P.S with case are $40. That doesn't mean the broken ones can't
> be fixed :-)
>
> http://www.oemexpress.com/items.asp?CartId={03E46F80-431C-4A79-B850-54C4
> A707A77F}&cc=CASEPOWER
>
> David Lessard
>
> Alexandria Electronics
> 50 Harrison Street
> Alexandria, Ontario
> K0C-1A0
>
> mr_fixit@xxxxxxxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Gary McCartney
> Sent: Monday, January 26, 2004 11:22 AM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: ATX Power supply
>
> Barry, I have repaired a couple of computer power suppplies which were
> dead. These were under 300W output. The problems were the 2 switching
> transistors in the primary side, both were 2SC3039's (against the
> heatsink). They checked ok out of circuit but were actually bad. New
> ones solved it.
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
> Barry Thompson wrote:
> >
> > Hi All: My 350 watt supply gave up.I repaired one before but it was
> only the
> > standby supply, but this has no outputs.I have a schematic but no
> > voltages.would someone have voltages for these supplys or the most
> likely
> > componets to check. Thanks Barry.
> > Barrys TV
> > Ottawa,Canada
> > barrystv@xxxxxxx
> >
> >
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